Method for preparing platinum-copper alloy nanowire by heliothis armigera nuclear polyhedrin

Abstract

The invention provides a method for preparing a platinum-copper alloy nanowire by heliothis armigera nuclear polyhedrin. The method mainly comprises the following steps: preparing heliothis armigera polyhedrin freeze-dried powder into a polyhedrin solution with the concentration of 0.0001-0.01mg / mL; preparing a K2PtC16 solution and a CuCl2 solution into a precursor mixed solution with the molar ratio of Pt atoms to Cu atoms being (1-3) to (1-3); preparing the polyhedrin solution and the precursor mixed solution into the mixed solution at the volume ratio of (3-6) to 1; and introducing ultra-pure nitrogen into the mixed solution for 5-30 minutes, adding sodium borohydride to the solution for reduction at a room temperature and changing the solution into black from faint yellow to prepare the network platinum-copper alloy nanowire. According to the method, the preparation time is especially short; the technology is simple; low-cost industrial production is easy to implement; the platinum-copper alloy nanowire has very high catalytic activity on electrochemical oxidation of ethanol, has good carbon monoxide poisoning resistance and good stability, and can be used as a fuel cell catalyst.

Description

technical field [0001] The invention relates to the field of preparation of fuel cell catalysts, in particular to a method for preparing platinum-copper nanowires with a network structure. Background technique [0002] Fuel cells are in a period of rapid development. The biggest limitation to the development of fuel cells is the cost issue, and the cost issue is ultimately the cost of the catalyst in the membrane electrode, its core component. Therefore, the research on fuel cell catalysts is the core research direction of fuel cell development at present. The catalysts that have been reported to have good catalytic activity for fuel cells include PtPd, PtRh, PdRh, etc. However, Pt, Pd, and Rh are precious metals with scarce resources, and the price is very expensive, so they are not suitable for large-scale production and application of fuel cells. . However, the physical and chemical properties of noble metals determine their irreplaceability in various catalytic reactio...

AI Technical Summary

Problems solved by technology

The catalysts that have been reported to have good catalytic activity for fuel cells include PtPd, PtRh, PdRh, etc. However, Pt, Pd, and Rh are precious metals with scarce resources, and the price is very expensive, so they are not suitable for large-scale production and application of fuel cells.

However, the physical and chemical properties of noble metals determine their irreplaceability in various catalytic reactions, which to some extent has become a bottleneck limiting the large-scale application of noble metal catalysts.

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